Rockwell Automation 1336T Function Block Prog. Manual, Series A/B - Manual (Page 124)

5–8 Block Transfer Services
1336 FORCE — 5.9 August 1995
The Total Number of Events in Application message requests the total
number of events in the currently active execution list.
PLC Block Transfer Instruction Data
BTW Instruction Length: 3 Words
BTR Instruction Length: 4 Words
Header
Word 1
PLC Decimal Value
3842
16384
Message Structure
Header
Word 2
Header
Word 3
PLC Request –– Block Transfer Write
Header Word 1
Header Word 2
Header Word 3
16384
0
Data
Word 4
0
PLC Decimal Value
3842 –– Message OK
–28926 –– Message Error
Number of Events
in Execution List
Drive Response –– Block Transfer Read
Message Operation
The PLC requests the number of events (function blocks) that are in
the current execution list. The drive response indicates the total
number of events. An application can have a maximum of 128
events.
Note: Function block types appearing more than once in the
execution list may have different ID numbers.
If the drive returns 0 for the number of events in the execution list,
no application is currently active in the drive.
Note: The value returned does not reflect what may or may not be
stored in BRAM.
Example
In this example, the drive’s response reports that 58 events are in the
drive’s execution list. This example uses decimal values.
1 0
N10:0
2 3 4 5 6 7 8 9
N10:90
BTW
Data File
BTR
Data File
Data Format
16384
16384 58
0
0
3842
3842
Application Status
Services:
Total Number of Events in
Application
"
"